diff --git a/apps/openmw/mwgui/tradeitemmodel.cpp b/apps/openmw/mwgui/tradeitemmodel.cpp
index 5df048d6db..660e940367 100644
--- a/apps/openmw/mwgui/tradeitemmodel.cpp
+++ b/apps/openmw/mwgui/tradeitemmodel.cpp
@@ -118,7 +118,7 @@ namespace MWGui
         auto update = [](std::vector<ItemStack>& list) {
             for (auto it = list.begin(); it != list.end();)
             {
-                int actualCount = it->mBase.getCellRef().getCount();
+                size_t actualCount = it->mBase.getCellRef().getCount();
                 if (actualCount < it->mCount)
                     it->mCount = actualCount;
                 if (it->mCount == 0)
diff --git a/apps/openmw/mwgui/tradewindow.cpp b/apps/openmw/mwgui/tradewindow.cpp
index 60ec6d589a..cf882d96cf 100644
--- a/apps/openmw/mwgui/tradewindow.cpp
+++ b/apps/openmw/mwgui/tradewindow.cpp
@@ -659,5 +659,7 @@ namespace MWGui
 
         MWBase::Environment::get().getWindowManager()->getInventoryWindow()->updateItemView();
         updateItemView();
+
+        updateOffer();
     }
 }
diff --git a/apps/openmw/mwgui/tradewindow.hpp b/apps/openmw/mwgui/tradewindow.hpp
index c4bde5fc11..748d7ce7d5 100644
--- a/apps/openmw/mwgui/tradewindow.hpp
+++ b/apps/openmw/mwgui/tradewindow.hpp
@@ -44,7 +44,7 @@ namespace MWGui
 
         void onDeleteCustomData(const MWWorld::Ptr& ptr) override;
 
-        TradeItemModel* getTradeModel() { return mTradeModel; };
+        TradeItemModel* getTradeModel() { return mTradeModel; }
 
         void updateItemView();